Doctor Who Keep Calm Don't Blink Trucker HatFans of the Doctor Who TV series will know this Doctor Who hat is a reference to the dreaded Weeping Angels! The Doctor Who Keep Calm Don't Blink Trucker Hat is white with a navy blue mesh back and a navy blue visor. It has a snap ...Doctor Who Keep Calm Don't Blink Trucker HatFans of the Doctor Who TV series will know this Doctor Who hat is a reference to the dreaded Weeping Angels! The Doctor Who Keep Calm Don't Blink Trucker Hat is white with a navy blue mesh back and a navy blue visor. It has a snap closure in back, and the front has a TARDIS time machine above the phrase, "Keep Calm and Don't Blink," a reference to the fact that deadly Weeping Angels can only attack when they are not being watched! - Doctor Who Keep Calm Don't Blink Trucker Hat in White Stylin Online